Friction draft-rigging.



i. H, SCHMIDT.

FRICTION DRAFT RIGGING. APPLICAHON VFILEDAPR. 1. 1915.

1,279,016. Pa tentedSept. 17,1918.

2 SNEETS SHEET l.

E. H. SCHMIDT.

FRICTION DHAFTYRIGGING. APPLICATION man APR. I

g zyflzmazz 5] H00 nfo'c $81 A @Hozwen manner H scumbag or CLEVELAND, 01310, nssroiron'tro NATIONAL mnhnnnnnn on'srmos COMPANY, 013 CLEVELAND; onto, A oonronn'rron or 01110.

FnIoTIoN DRAFT-Brooms.

i To all whom it may concern:

Be it known that I, ERNEsT SoHMIo'r,

a citizen of the United States, residing at Cleveland, (n'ryehoga, county, Ohio, have invented new and usefuhIn gi-ovements in llrietion "-Draft-Riggingfof which the iollowing is at speoifieution; referencelbeing had to the eocompanyin'gdrawings, in whip-11+ Figure l is a, plan, partly in section, of, my improved riggingflshowingits eppli'eation to the frames 'of ithe car; Fig. 2 is horizontal longitudinal section .on :lines tudinal section on the lines III III of Fig.

' 2; Fig. 4: is aseoti'onon the. lines IV-IV-0f Fig. 2, andFigIff is section on thellines. V'-V ofFig; 2.

My invention relates-to frietion draft rigging of the type in which the frictional. elements are comprised ofe plurality of friction shoes, and a central irlctlon member,

and ilrwwhiph the friction-Mines are adapted v-l member eonslstsm a'novet arrangement of the con to be edged iii'lgltfiil'illly against the central by Wedge members. My lnventlon tral'frietion JillllbGLlJ-hil frietioiil shoes, the wedgesfancl the lsprlhg's, and the cooperaition of'ftlise parts, which I shall herein- J I r V r after describe nncl olann.

1 Referringto the drawings, 2 indicates a A case containing e-eentral friction member 3,

Whiel preferably rectangular in-shape and whiehis secured to on abutment 4 of the case ,clispo 2 by,'r-a rearwardlysxtendingbolt 5. The abutment 4 has arecess-fiythrou h 'whioh the nut 7may be applied-to the be 65.. The

centrti friction member has flat, Vertically d friction surfaces 8 against which the friction shoes 9 are adapted to beer. There are two frietio n'shoe s ineach set,

"which are erranged on pppos1te sides of the friction member and'bearagainst its vertical faces 8. l The wedges more of rectangular shape and press the fnit'tion shoes 9 e geinst the'vfrietion surfaces 8 nf 'the friction memher; The" foremost edge 1 is preferably made i" tegml with the front follower 11. .On eith r sigie of the abutment 4 is arranged alcornp ession;- spring 12, which at its rear end be s against the ease, and,'et its for- Ward e111; against the rearmost "Wedge 10.

lWit-hin eaeh compression spring 12 isf ar i i, i

' Specification 0t Lettersietent.

through. the "recess-a6.

springs i2flare then inserted. through the; apertures 18 in the sides either case, and the;

rat'enteqfse t. 17; 192 s.

' ranged a" release spiingl3'-,;yvhioh,rat its rear end; beoirsga'gainstithe' meted, at-its for- Ward end s geinst a. shoulder 14 on a .pluhger tions apertures 16in the wedges-10, and, at their forward ends, bear 'a'geinstthe foreino'stllweclge- 10. I The plnngers 15 have after the plungers have aengagenqent of the foremost n v Wedge I foremost set'of shoes '9 beer ago/ins "the, -ree'r faces of an inferniedihte from .its edging: engagement Withtheseeond set-of shoes.

In assembling the device, t-lie oe1'1tralfrietion member is first attached to the abutment wedge flfif" kind-release it Th [compression .9

release springs 13 ma "plunger-s 15gerethen i-ns'eited'from the forward side of the ease,

a d the Wedges 110,.fricti'on shoes 9 and f ont follower llvarethen nosed imposition. After bufiing or dreftjt e "release-springs 13 will foreetheplungers 15 forwardly, thus" forcing outWardly-the front follower .11.

T he shoulders 1.7 will str ke the intermediate Wedge 10 andfiaush it forwardly, shoving and the com ression spring" 12'w1ll then push forward y the renrmost-set of i'ri-c'tfon $110059.

I Lave foumlthat i( is of considerable uglvantoge, from epraetioal-stnndpoint, to have 3, and the friction fa-cesoftlle shoes9, flat;

they are much easier to manufacture and their wear is more uniform. The use of the tW0-C01 TlP18SS101l sprlngs is also of advantage, since it makes possible anfiinereesed capacity in the rigging, while reducing the number of setsof frietion shoes and wedges '5- for-a given capacityjof'the-Wigging. Another adventagelies. in=the1fectthutthe releese springs 13=are contained Within the of-the buflin r springs in perallelwith the frition mem er, results in economy of s ace. The terms and expressions which I have employed a and not of imitation, and have no intention in the use of such terms and expreswith it the firemen set of. friction 'shoesth buffing springs, which, with the arrangement I used as terms of description sions, of excluding any mechanical equivalents of the features shown and described, or portions thereof, t recognize that various structural Haiti cations are possible within the scope of the invention claimed,

What I claim is:

1. In shock absorbing mechanism, a central member having flatjffriction faces, friction shoes bearing against said friction faces, wedges in engagement with said friction shoes, 11. set of compression springs and a set of release springs, each set comprising a plurality of similar springs arranged in twin.

2. In shock absorbing mechanism, a con t-gnl member having flat friction faces, frictioi rshoes bearing against said friction faces, wedges in engagement with said friction shoes, a set of compression spring. and a set bfrelease springs, the axis of the central member, the friction shoes, wedges and springs being arranged in the same plane. I

3. In shock absorbing mechanism, a central friction member, sets ;.f,.frictionsl1 25 hearing thereagainst, wedges'engaging said friction shoes, ,a plurality'fof compression sprlngs, and release springs contained in the compression springs and operatlng on the Wedges to restore. the friction parts to normal position after bnliing or draft.

-l. In shock absorbing nn-chanism. a con.-

-iral. friction member, sets of friction shoes Cit. ii],

' having an almtn'ient therein. a central fric tion member secured to said abutment, and friction shoes and wedges arranged about said friction member, the case having openings upon opposite sides of the abutment. for insertion of compression and restoring springs.

ERNEST H.. SCHMIDT. 

